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- Some geologic materials, such as volcanic tuff or partially molten rock, can muffle or even block a temblor's normally intense S waves as they travel through the earth's crust. 当一般地震所产生的强烈S波通过地壳时，如果遭遇某些地质，例如，火山凝灰岩或部份熔融的熔岩，便会受到减弱甚至阻绝。
- Also on the analysis of geochemical data, it is sugested that the composition of eclogite is not simple butacombination of terrestriaI tholeiite and basic volcanic tuff and marl. 同时根据地球化学资料等分析，认为榴辉岩的成分不是单一的，一部分为大陆拉斑玄武岩、一为基性的火山凝灰岩和泥灰岩。
- Green black stone forest, volcanic tuff is cemented after the formation of the group Huya staggered columns, with the west side of a relatively old Ling, a 10-lam of the Changbai a beautiful picture. 青黑色的石林，是火山凝灰岩胶结后形成的虎牙交错石柱群，它与西侧老岭相对，构成一幅长白十林的秀丽画卷。
- They were deposits of volcanic tuff in Nye County, Nevada; 3处场地分别是内华达州奈伊县的火山凝灰岩矿床层；
- They were deposits of volcanic tuff in Nye County, Nevada 3处场地分别是内华达州奈伊县的火山凝灰岩矿床层
- Volcanic ash settles quickly to form extensive beds of tuff, many of which contain perfectly preserved fissils . 火山灰迅速降落形成了大面积的凝灰岩岩层，其中很多岩层含有保存完好的化石。
- A volcanic rock formed by the welding together of tuff material from an explosive volcanic eruption. 熔结凝灰岩火山喷发后凝灰物质聚集后形成的一种火成岩
- There they cool and harden into volcanic ash. 然后在空中它们又冷却变成火山灰。
- This kind of rock is called tuff. 这里的岩质是凝灰岩。
- Volcanic ash, lapilli, block and bombs. 火山灰、火山砾、火山块和火山弹。
- Application of curtain grouting in thin ash rock water - bearing seam 帷幕注浆在薄层灰岩含水层中的应用
- ORE-CONTROLLING FACTORS OF GOLD DEPOSITS IN VOLCANIC TUFF IN THE SOUTHWESTERN GUIZHOU PROVINCE 黔西南凝灰岩中金矿控矿因素概述
- Basalt is the commonest volcanic rock. 玄武岩是最普通的火山岩。
- Water flows from the condenser to the ash room. 水从冷凝器流出，流入灰浆室。
- The temperature of volcanic gases is very high. 火山气体的温度很高。
- The rock was honeycombed with passages. 岩石上有许多蜂窝状的小孔。
- Geological characteristic of volcanic tuff type gold deposit and Prospecting significance in guizhou 贵州火山凝灰岩型金矿地质特征及找矿意义
- Don't drop cigarette ash on the carpet. 别把烟灰落在地毯上。
- Many young rock hounds grow up to be geologists. 许许多多爱好收集岩石的少年，长大后成了地质学家。
- The smoldering coal or ash of a dying fire. 余烬将要熄灭的火中的冒着烟的煤块或灰烬
